Java XML First Child Element getFirstVisibleChildElement(Node parent)

Description

Finds and returns the first visible child element node.

License

Apache License

Declaration

public static Element getFirstVisibleChildElement(Node parent) 

Method Source Code

//package com.java2s;
/*//w ww . j av  a 2s  .  c  o m
 * Copyright 1999-2002,2004,2005 The Apache Software Foundation.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.util.Hashtable;

import org.w3c.dom.Element;

import org.w3c.dom.Node;

public class Main {
    /** Finds and returns the first visible child element node. */
    public static Element getFirstVisibleChildElement(Node parent) {

        // search for node
        Node child = parent.getFirstChild();
        while (child != null) {
            if (child.getNodeType() == Node.ELEMENT_NODE && !isHidden(child)) {
                return (Element) child;
            }
            child = child.getNextSibling();
        }

        // not found
        return null;

    }

    /** Finds and returns the first visible child element node. */
    public static Element getFirstVisibleChildElement(Node parent, Hashtable hiddenNodes) {

        // search for node
        Node child = parent.getFirstChild();
        while (child != null) {
            if (child.getNodeType() == Node.ELEMENT_NODE && !isHidden(child, hiddenNodes)) {
                return (Element) child;
            }
            child = child.getNextSibling();
        }

        // not found
        return null;

    }

    public static boolean isHidden(Node node) {
        if (node instanceof com.sun.org.apache.xerces.internal.impl.xs.opti.NodeImpl)
            return ((com.sun.org.apache.xerces.internal.impl.xs.opti.NodeImpl) node).getReadOnly();
        else if (node instanceof com.sun.org.apache.xerces.internal.dom.NodeImpl)
            return ((com.sun.org.apache.xerces.internal.dom.NodeImpl) node).getReadOnly();
        return false;
    }

    public static boolean isHidden(Node node, Hashtable hiddenNodes) {
        if (node instanceof com.sun.org.apache.xerces.internal.impl.xs.opti.NodeImpl)
            return ((com.sun.org.apache.xerces.internal.impl.xs.opti.NodeImpl) node).getReadOnly();
        else if (node instanceof com.sun.org.apache.xerces.internal.dom.NodeImpl)
            return ((com.sun.org.apache.xerces.internal.dom.NodeImpl) node).getReadOnly();
        else
            return hiddenNodes.containsKey(node);
    }
}

Related

1. getFirstNamedChildNode(Node root, String nodeName)
2. getFirstNontextChild(Node d)
3. getFirstNonTextChild(Node root)
4. getFirstTextChild(Node n)
5. getFirstTextChild(Node node)
6. getValueOfFirstElementChild(final Element element, final String namespace, final String localname)
7. insertBeforeFirstChild(Element object, Element attrId)
8. readFirstChild(Node parentNode, String nodeName)
9. VectoriseFirstChildrenNodes(Node node, Vector elements)